US4735925A - Low-temperature sinterable ceramic composition - Google Patents

Low-temperature sinterable ceramic composition Download PDF

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Publication number
US4735925A
US4735925A US06/874,184 US87418486A US4735925A US 4735925 A US4735925 A US 4735925A US 87418486 A US87418486 A US 87418486A US 4735925 A US4735925 A US 4735925A
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weight
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composition
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US06/874,184
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Takashi Kato
Minato Ando
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Niterra Co Ltd
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NGK Spark Plug Co Ltd
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Assigned to NGK SPARK PLUG CO., LTD. reassignment NGK SPARK PLUG CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ANDO, MINATO, KATO, TAKASHI
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/44Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminates
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/16Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
    • C04B35/18Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/48Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
    • C04B35/481Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates containing silicon, e.g. zircon

Definitions

  • This invention relates to a ceramic composition which can be used as an electrically insulating material in IC packages, IC boards, multilayer wiring boards, etc., and particularly to a ceramic composition that can be sintered at low temperatures.
  • Alumina having an excellent insulating property, heat resistance and mechanical strength has been widely used as an electrically insulating material.
  • the sintering temperature of alumina is 1300° to 1600° C. This high firing temperature leads to a high cost of production.
  • boards, etc. have been made of high-melting metals, such as W and Mo-Mn as a conductive material.
  • high-melting metals such as W and Mo-Mn
  • conductive metals have high electrical resistance, and therefore, the speed of transmitting signals is slow.
  • Crystallized glass has a relatively high mechanical strength as a material onto which a low-electric resistance metal is baked, but is of high cost.
  • a sintered ceramic body is inexpensive, but has the disadvantage of low strength.
  • the ceramic compositions described in the above-cited Japanese Patent applications are improved to some extent, but it is desired to develop a more improved ceramic composition.
  • the present invention relates to a low-temperature sinterable ceramic composition comprising 1 to 20% by weight of Al 2 O 3 , 15 to 50% by weight of SiO 2 , 0 to 5% by weight of MgO, 3 to 18% by weight of CaO, 0 to 5% by weight of TiO 2 , 1 to 8% by weight of B 2 O 3 , 0 to 2% by weight of Li 2 O, 20 to 80% by weight of at least one of zircon, mullite and spinel, and 1 to 12% by weight of a fluoride selected from CaF 2 , MgF 2 , LiF, AlF 3 , MnF 2 , BaF 2 and SrF 2 .
  • the coefficient of thermal expansion of the composition tends to become high. If the amount of Al 2 O 3 exceeds 20% by weight, the sintering temperature of the composition tends to become high. If the amount of SiO 2 is less than 15% by weight, the resulting composition tends to have a high sintering temperature and a high dielectric constant. If it exceeds 50% by weight, the coefficient of thermal expansion of the composition tends to increase. If the amount of MgO is larger than 5% by weight, the composition tends to have a high sintering temperature and a high coefficient of thermal expansion.
  • the sintering temperature of the composition tends to become high, and if the amount of CaO is larger than 18% by weight, the dielectric constant of the composition tends to be high. If the amount of TiO 2 is larger than 5% by weight, the resulting composition tends to have a high dielectric constant. If the amount of B 2 O 3 is less than 1% by weight, the composition tends to have a high sintering temperature, and if it exceeds 8% by weight, the composition tends to have a low impact strength. If the amount of Li 2 O is larger than 2% by weight, the impact strength of the composition tends to become low.
  • the resulting composition tends to have low impact strength and a high coefficient of thermal expansion. If the amount of any of these components exceeds 80% by weight the sintering temperature of the composition tends to become too high. In particular, if zircon is used as a ingredient, the dielectric constant of the composition also tends to become high. If the amount of the fluoride is less than 1% by weight, the flexural strength of the composition tends to become low, and if it is larger than 12% by weight, the coefficient of thermal expansion of the composition tends to become too high.
  • the zircon, mullite and spinel are natural occuring products which are of more than 99% by weight in purity and have compositions of ZrO 2 .SiO 2 , 3Al 2 O 3 .2SiO 2 and MgO.Al 2 O 3 respectively. These may contain less than 0.1% by weight of total amount of Na 2 O and K 2 O as impurities.
  • the most preferable composition according to the present invention comprises 2 to 4% by weight of Al 2 O 3 , 20 to 40% by weight of SiO 2 , 0.5 to 1% by weight of MgO, 5 to 10% by weight of CaO, 1 to 2% by weight of TiO 2 , 3 to 6% by weight of B 2 O 3 , 0.5 to 1% by weight of Li 2 O, 40 to 60% by weight of zircon and 4 to 8% by weight of CaF 2 or SrF 2 .
  • the ceramic composition according to the present invention may be molded in a usual manner, such as press molding, sheet molding, etc, and sintered.
  • a press molding an aqueous mixture of raw material of the composition and binder is mixed and ground, for example, in a ball-mill, dried by spray dry, freeze dry etc., sieved and pressed to obtain a molded product.
  • polyvinylalcohol PVA
  • carboxymethyl cellulose CMC
  • methyl cellulose MC
  • acryl emulsion and gum arabic may be used in an amount of 1 to 5% by weight based on a dry raw material as 100.
  • a raw material is dispersed in a dispersant, such as toluene, ketone, etc. together with a binder, such as acrylic resin, butyral resin, etc., and a plasticizer, such as polyethylene glycohol, phthalate ester, etc., kneaded and ground, reduced form, tape casted, dried, and degreased to obtain molded product.
  • a dispersant such as toluene, ketone, etc.
  • a binder such as acrylic resin, butyral resin, etc.
  • a plasticizer such as polyethylene glycohol, phthalate ester, etc.
  • the above component were put in a 3-liter alumina ceramic ball mill together with 2 kg of alumina ceramic spheres having a diameter of 15 mm, and mixed at 84 rpm for 50 hours.
  • the resulting slurry was lyophilized by a lyophilizer for 15 hours.
  • the dried powder was passed through a 32-mesh sieve and then compressed in a mold into a desired shape under a pressure of 1500 kg/cm 2 .
  • the molded product was examined for its sintering temperature, fluxural strength, dielectric constant, and coefficient of thermal expansion. The results are shown below.
  • the ceramic composition has a sintering temperature of not more than 1000° C., the cost of firing can be curtailed, and low-resistance conductors such as Ag, Ag-Pd, Au and Cu can be baked on it. As a result, the speed of transmitting signals can be increased. Furthermore, the ceramic composition of this invention has a flexural strength of as high as about 2,000 to 2,500 kg/cm 2 and a sufficiently low dielectric constant and dielectric power factor. In addition, its coefficient of thermal expansion is not high.
  • the low-temperature sinterable ceramic composition has a sintering temperature of not higher than 1,000° C., a flexural strength of at least 2,100 kg/cm 2 , a dielectric constant of not more than 8 at 1 MHz and a coefficient of thermal expansion of not more than 8 ⁇ 2 -6 /°C., more preferably a stintering temperature of 850° to 950° C., a flexural strength of at least 2,500 kg/cm 2 , a dielectric constant of not more than 6 at 1 MHz and coefficient of thermal expansion of not more than 4 to 6 ⁇ 10 -6 /°C.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Composite Materials (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Production Of Multi-Layered Print Wiring Board (AREA)
US06/874,184 1985-06-14 1986-06-13 Low-temperature sinterable ceramic composition Expired - Lifetime US4735925A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60-127966 1985-06-14
JP60127966A JPS61286263A (ja) 1985-06-14 1985-06-14 低温焼結磁器組成物

Publications (1)

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US4735925A true US4735925A (en) 1988-04-05

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JP (1) JPS61286263A (enrdf_load_stackoverflow)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0471590A1 (en) * 1990-08-16 1992-02-19 Engelhard Corporation Thermal shock and creep resistant porous mullite articles prepared from topaz and process for manufacture
US5135896A (en) * 1989-10-31 1992-08-04 North American Refractories Company Spinel bondable ceramic composition
FR2724165A1 (fr) * 1994-09-07 1996-03-08 Serole Bernard Procede d'activation du frittage de ceramiques par controle stoechiometrique
WO1998019977A1 (en) * 1996-11-04 1998-05-14 Rutgers, The State University Ceramic mortar resistant to corrosive agents
US5807798A (en) * 1996-12-20 1998-09-15 E. I. Du Pont De Nemours And Company Refractory compositions for use in fluid bed chlorinators
EP1048751A1 (de) * 1999-04-29 2000-11-02 Hort, Stefan Verfahren zum Aufbringen einer harten Beschichtung auf einen Gegenstand und beschichteter Gegenstand
WO2002079114A1 (fr) * 2001-03-28 2002-10-10 Murata Manufacturing Co.,Ltd. Composition destinee a des ceramiques d'isolation et ceramiques d'isolation contenant ces compositions
EP0923085A4 (en) * 1997-06-16 2005-12-28 Matsushita Electric Ind Co Ltd CONDUCTOR PLATE FOR RESISTORS AND METHOD FOR THE PRODUCTION THEREOF
US20100210446A1 (en) * 2008-01-11 2010-08-19 Tsinghua University Low temperature co-fired ceramic powder and special raw material and use thereof
US20110014423A1 (en) * 2009-07-14 2011-01-20 Yu-Hsin Yeh Ceramic powder compositions and optoelectronic device substrates utilizing the same
CN110357597A (zh) * 2019-08-01 2019-10-22 电子科技大学 一种钙硼硅系高热膨胀陶瓷基板材料及其制备方法
WO2021158756A1 (en) * 2020-02-05 2021-08-12 Ferro Corporation M7 ltcc-silver system and related dielectric compositions for high frequency applications
CN114874005A (zh) * 2022-06-10 2022-08-09 安徽理工大学 温度稳定型钛酸镁基微波介质复合陶瓷及其制备方法
CN115124329A (zh) * 2022-06-27 2022-09-30 清华大学深圳国际研究生院 一种ltcc基板及其制备方法
WO2024050660A1 (zh) * 2022-09-05 2024-03-14 中国科学院深圳先进技术研究院 一种用于低温共烧陶瓷的玻璃/陶瓷复合材料及其制备方法和应用

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5133207B2 (ja) * 2008-11-08 2013-01-30 住友化学株式会社 チタン酸アルミニウム系セラミックスの製造方法
JP6697910B2 (ja) * 2016-03-17 2020-05-27 第一稀元素化学工業株式会社 ジルコニウム質組成物及びその製造方法

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB545239A (en) * 1941-06-17 1942-05-15 Titanium Alloy Mfg Co Improvements relating to zircon refractories and refractory compositions and methods of making the same
US4102690A (en) * 1975-04-16 1978-07-25 Janusz Koper Powder for continuous casting
US4104075A (en) * 1976-01-26 1978-08-01 Shinagawa Refractories Co., Ltd. Refractories, batch for making the same and method for making the same
GB2031399A (en) * 1978-08-14 1980-04-23 Ngk Insulators Ltd Polycrystalline transparent spinel sintered body
JPS55136171A (en) * 1979-04-06 1980-10-23 Ngk Spark Plug Co Manufacture of fluorine mica ceramic sintered body
US4295892A (en) * 1976-04-08 1981-10-20 Ngk Insulators, Ltd. Cordierite ceramic honeycomb and a method for producing the same
SU876610A1 (ru) * 1979-10-12 1981-10-30 Белгородский технологический институт строительных материалов Шихта дл изготовлени теплоизол ционного огнеупорного материала
US4316936A (en) * 1978-09-06 1982-02-23 Thorn Electrical Industries Limited Sealing of ceramic and cermet parts, sealing material therefor and ceramic seal obtained
JPS6136168A (ja) * 1984-07-27 1986-02-20 株式会社日立製作所 多層回路板とその製造方法
US4584151A (en) * 1982-12-27 1986-04-22 Nkg Insulators, Ltd. Method of producing a polycrystalline transparent spinel sintered body
JPS61186261A (ja) * 1985-02-14 1986-08-19 日本特殊陶業株式会社 セラミツクス焼結体
JPS61186260A (ja) * 1985-02-14 1986-08-19 日本特殊陶業株式会社 セラミツクス焼結体

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB545239A (en) * 1941-06-17 1942-05-15 Titanium Alloy Mfg Co Improvements relating to zircon refractories and refractory compositions and methods of making the same
US4102690A (en) * 1975-04-16 1978-07-25 Janusz Koper Powder for continuous casting
US4104075A (en) * 1976-01-26 1978-08-01 Shinagawa Refractories Co., Ltd. Refractories, batch for making the same and method for making the same
US4295892A (en) * 1976-04-08 1981-10-20 Ngk Insulators, Ltd. Cordierite ceramic honeycomb and a method for producing the same
GB2031399A (en) * 1978-08-14 1980-04-23 Ngk Insulators Ltd Polycrystalline transparent spinel sintered body
US4273587A (en) * 1978-08-14 1981-06-16 Ngk Insulators, Ltd. Polycrystalline transparent spinel sintered body and a method for producing the same
US4316936A (en) * 1978-09-06 1982-02-23 Thorn Electrical Industries Limited Sealing of ceramic and cermet parts, sealing material therefor and ceramic seal obtained
JPS55136171A (en) * 1979-04-06 1980-10-23 Ngk Spark Plug Co Manufacture of fluorine mica ceramic sintered body
SU876610A1 (ru) * 1979-10-12 1981-10-30 Белгородский технологический институт строительных материалов Шихта дл изготовлени теплоизол ционного огнеупорного материала
US4584151A (en) * 1982-12-27 1986-04-22 Nkg Insulators, Ltd. Method of producing a polycrystalline transparent spinel sintered body
JPS6136168A (ja) * 1984-07-27 1986-02-20 株式会社日立製作所 多層回路板とその製造方法
JPS61186261A (ja) * 1985-02-14 1986-08-19 日本特殊陶業株式会社 セラミツクス焼結体
JPS61186260A (ja) * 1985-02-14 1986-08-19 日本特殊陶業株式会社 セラミツクス焼結体

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5252272A (en) * 1989-07-28 1993-10-12 Engelhard Corporation Thermal shock and creep resistant porous mullite articles prepared from topaz and process for manufacture
US5135896A (en) * 1989-10-31 1992-08-04 North American Refractories Company Spinel bondable ceramic composition
AU649969B2 (en) * 1989-10-31 1994-06-09 North American Refractories Co. Spinel bondable ceramic composition
EP0471590A1 (en) * 1990-08-16 1992-02-19 Engelhard Corporation Thermal shock and creep resistant porous mullite articles prepared from topaz and process for manufacture
FR2724165A1 (fr) * 1994-09-07 1996-03-08 Serole Bernard Procede d'activation du frittage de ceramiques par controle stoechiometrique
US5700408A (en) * 1994-09-07 1997-12-23 W.C. Heraeus Gmbh Method of producing a ceramic component by sintering
WO1998019977A1 (en) * 1996-11-04 1998-05-14 Rutgers, The State University Ceramic mortar resistant to corrosive agents
US5932505A (en) * 1996-11-04 1999-08-03 Rutgers, The State University Hydrofluoric acid resistant ceramic mortar
US5807798A (en) * 1996-12-20 1998-09-15 E. I. Du Pont De Nemours And Company Refractory compositions for use in fluid bed chlorinators
EP0923085A4 (en) * 1997-06-16 2005-12-28 Matsushita Electric Ind Co Ltd CONDUCTOR PLATE FOR RESISTORS AND METHOD FOR THE PRODUCTION THEREOF
EP1048751A1 (de) * 1999-04-29 2000-11-02 Hort, Stefan Verfahren zum Aufbringen einer harten Beschichtung auf einen Gegenstand und beschichteter Gegenstand
WO2002079114A1 (fr) * 2001-03-28 2002-10-10 Murata Manufacturing Co.,Ltd. Composition destinee a des ceramiques d'isolation et ceramiques d'isolation contenant ces compositions
US20100210446A1 (en) * 2008-01-11 2010-08-19 Tsinghua University Low temperature co-fired ceramic powder and special raw material and use thereof
US8298971B2 (en) * 2008-01-11 2012-10-30 Tsinghua University Low temperature co-fired ceramic powder and special raw material and use thereof
US20110014423A1 (en) * 2009-07-14 2011-01-20 Yu-Hsin Yeh Ceramic powder compositions and optoelectronic device substrates utilizing the same
CN110357597A (zh) * 2019-08-01 2019-10-22 电子科技大学 一种钙硼硅系高热膨胀陶瓷基板材料及其制备方法
WO2021158756A1 (en) * 2020-02-05 2021-08-12 Ferro Corporation M7 ltcc-silver system and related dielectric compositions for high frequency applications
US20220119315A1 (en) * 2020-02-05 2022-04-21 Ferro Corporation M7 LTCC-Silver System And Related Dielectric Compositions For High Frequency Applications
TWI785495B (zh) * 2020-02-05 2022-12-01 美商菲洛公司 用於高頻應用之m7 ltcc-銀系統及相關介電組成物
CN114874005A (zh) * 2022-06-10 2022-08-09 安徽理工大学 温度稳定型钛酸镁基微波介质复合陶瓷及其制备方法
CN115124329A (zh) * 2022-06-27 2022-09-30 清华大学深圳国际研究生院 一种ltcc基板及其制备方法
CN115124329B (zh) * 2022-06-27 2023-08-08 清华大学深圳国际研究生院 一种ltcc基板及其制备方法
WO2024050660A1 (zh) * 2022-09-05 2024-03-14 中国科学院深圳先进技术研究院 一种用于低温共烧陶瓷的玻璃/陶瓷复合材料及其制备方法和应用

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Publication number Publication date
JPH0256304B2 (enrdf_load_stackoverflow) 1990-11-29
JPS61286263A (ja) 1986-12-16

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